我将数据字节从linux发送到串口RS232的窗口,然后一切正常,只有我必须处理从linux发送的0xa,因为Windows将其读取为0xd 0xa.
但是当我从windows发送数据字节到linux时,一些字节被替换为 –
?windows发送 – 0xd linux接收0xa
windows发送 – 0x11 linux接收整数8200的垃圾tyte值
请解释当我将数据从Windows发送到Linux时出了什么问题.
提前致谢
Windows串口初始化
char *pcCommPort = "COM1";
hCom = CreateFile( TEXT("COM1"),
GENERIC_READ | GENERIC_WRITE,
0, // must be opened with exclusive-access
NULL, // no security attributes
OPEN_EXISTING, // must use OPEN_EXISTING
0, // not overlapped I/O
NULL // hTemplate must be NULL for comm devices
);
fSuccess = GetCommState(hCom, &dcb);
FillMemory(&dcb, sizeof(dcb),0);
dcb.DCBlength = sizeof(dcb);
dcb.BaudRate = CBR_115200; // set the baud rate
dcb.ByteSize = 8; // data size, xmit, and rcv
dcb.Parity = NOPARITY; // no parity bit
dcb.StopBits = ONESTOPBIT; // one stop bit
dcb.fOutxCtsFlow = false;
fSuccess = SetCommState(hCom, &dcb);
buff_success = SetupComm(hCom, 1024, 1024);
COMMTIMEOUTS cmt;
// ReadIntervalTimeout in ms
cmt.ReadIntervalTimeout = 1000;
cmt.ReadTotalTimeoutMultiplier = 1000;
cmt.ReadTotalTimeoutConstant=1000;
timeout_flag = SetCommTimeouts(hCom, &cmt);
windows写序列 –
WriteFile(hCom, buffer, len, &write, NULL);
Linux串口初始化 –
_fd_port_no = open("//dev//ttyS0", O_RDWR | O_NOCTTY | O_NDELAY);
tcgetattr(_fd_port_no, &options);
cfsetispeed(&options, B115200);
cfsetospeed(&options, B115200);
options.c_cflag |= (CS8);
options.c_cflag|=(CLOCAL|CREAD);
options.c_cflag &=~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
options.c_iflag |= (IXON | IXOFF | IXANY);
options.c_cflag &= ~ CRTSCTS;
tcsetattr(_fd_port_no, TCSANOW, &options);
读串口linux-
while(read(_fd_port_no,buffer+_buffer_len,sizeof(buffer))>0)
{
_buffer_len = _buffer_len+sizeof(buffer);
}
是的,正如我从Linux告诉Windows只检测到NL / CR问题,但我通过字节替换解决了它,
但是你对从Windows发送到Linux的serila数据(字节替换策略)有任何了解吗？
实际上我必须通过串行发送200字节块中的200 KB文件,以便在从Windows发送到Linux时可以替换哪个字节
